Answer:
105
Step-by-step explanation:
subbing x for 7:
3*7(7-2)=21*5=105
Answer:
4 in approx
Step-by-step explanation:
Step one:
given data
circle with 25 inch circumference
c= 25in
Required:
the radius of the circle
Step two:
the expression for the circumference of a circle is
C= 2πr
making r the subject of the formula we have
r= c/2π
r= 25/2*3.142
r= 25/6.284
r=3.97
r=4 in approx
Answer:
y = -2/3x + 5
Step-by-step explanation:
(-3, 7) and (3, 3)
First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values:
(3 - 7) / (3 -(-3))
Simplify the parentheses.
= (3 - 7) / (3 + 3)
Simplify the fraction.
= (-4) / (6)
= -4/6
= -2/3
This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.
y = -2/3x + b
To find b, we want to plug in a value that we know is on this line: in this case, I will use the second point (3, 3). Plug in the x and y values into the x and y of the standard equation.
3 = -2/3(3) + b
To find b, multiply the slope and the input of x(3)
3 = -2 + b
Now, add 2 to both sides to isolate b.
5 = b
Plug this into your standard equation.
y = -2/3x + 5
This is your equation.
Check this by plugging in the other point you have not checked yet (-3, 7).
y = -2/3x + 5
7= -2/3(-3) + 5
7 = 2 + 5
7 = 7
Your equation is correct.
Hope this helps!
Answer:
There are many scenario's.
Step-by-step explanation:
1.4:5
2.4/5
3.4÷5
